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Re: Same .m file: different results with different versions of Octave


From: Judd Storrs
Subject: Re: Same .m file: different results with different versions of Octave
Date: Mon, 19 Apr 2010 11:44:35 -0400

I'm not sure that's really a good fix for the problem. GSL's approach
is fundamentally superior because it avoids cancellation entirely by
factoring the results into a product. All of the additions in GSL's
implementation are between probably positive values that cannot have
cancellation problems. glibc's algorithim is comparatively naive and
should just be replaced but I haven't had a chance to verify the math
behind the GSL terms yet.


--judd


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